cosmetic changes

jit/jit-rules.h

@@ -36,20 +36,23 @@ extern	"C" {
 #if defined(USE_LIBJIT_INTERPRETER)
 # define JIT_BACKEND_INTERP		1
 # define JIT_HAVE_BACKEND		1
-#elif defined(__i386) || defined(__i386__) || defined(_M_IX86)
-	#define JIT_BACKEND_X86			1
-	#define	JIT_HAVE_BACKEND		1
 #elif defined(__alpha) || defined(__alpha__)
 # define JIT_BACKEND_ALPHA		1
 # define JIT_HAVE_BACKEND		1
-#elif defined(__amd64) || defined(__amd64__) || defined(_x86_64) || defined(_x86_64__)
-	#define JIT_BACKEND_X86_64		1
-	#define	JIT_HAVE_BACKEND		1
 #elif defined(__arm) || defined(__arm__)
 # define JIT_BACKEND_ARM		1
 # define JIT_HAVE_BACKEND		1
+#elif defined(__i386) || defined(__i386__) || defined(_M_IX86)
+# define JIT_BACKEND_X86		1
+# define JIT_HAVE_BACKEND		1
+#elif defined(__amd64) || defined(__amd64__) || defined(_x86_64) || defined(_x86_64__)
+# define JIT_BACKEND_X86_64		1
+# define JIT_HAVE_BACKEND		1
 #endif
 
+/*
+ * Fallback  to interpreter if there is no appropriate native backend.
+ */
 #if !defined(JIT_HAVE_BACKEND)
 # define JIT_BACKEND_INTERP		1
 #endif
@@ -80,20 +83,21 @@ typedef struct
 #define	JIT_REG_CALL_USED	(1 << 8)	/* Destroyed by a call */
 #define	JIT_REG_IN_STACK	(1 << 9)	/* Middle of stack-like allocation */
 #define	JIT_REG_GLOBAL		(1 << 10)	/* Candidate for global allocation */
-#define	JIT_REG_ALL	(JIT_REG_WORD | JIT_REG_LONG | JIT_REG_FLOAT32 | \
-					 JIT_REG_FLOAT64 | JIT_REG_NFLOAT)
+#define	JIT_REG_ALL		(JIT_REG_WORD | JIT_REG_LONG \
+				 | JIT_REG_FLOAT32 | JIT_REG_FLOAT64 \
+ 				 | JIT_REG_NFLOAT)
 
 /*
  * Include definitions that are specific to the backend.
  */
 #if defined(JIT_BACKEND_INTERP)
 # include "jit-rules-interp.h"
-#elif defined(JIT_BACKEND_X86)
-	#include "jit-rules-x86.h"
-#elif defined(JIT_BACKEND_ARM)
-	#include "jit-rules-arm.h"
 #elif defined(JIT_BACKEND_ALPHA)
 # include "jit-rules-alpha.h"
+#elif defined(JIT_BACKEND_ARM)
+# include "jit-rules-arm.h"
+#elif defined(JIT_BACKEND_X86)
+# include "jit-rules-x86.h"
 #elif defined(JIT_BACKEND_X86_64)
 # include "jit-rules-x86-64.h"
 #else
@@ -110,14 +114,19 @@ extern jit_reginfo_t const _jit_reg_info[JIT_NUM_REGS];
  * definitions if it has more registers than can fit in a "jit_uint".
  */
 #if !defined(jit_regused_init)
+
 typedef jit_uint jit_regused_t;
+
 #define	jit_regused_init		(0)
 #define	jit_regused_init_used		(~0)
-#define	jit_reg_is_used(mask,reg)		\
-			(((mask) & (((jit_uint)1) << (reg))) != 0)
+
+#define	jit_reg_is_used(mask,reg)	(((mask) & (((jit_uint)1) << (reg))) != 0)
+
 #define	jit_reg_set_used(mask,reg)	((mask) |= (((jit_uint)1) << (reg)))
+
 #define	jit_reg_clear_used(mask,reg)	((mask) &= ~(((jit_uint)1) << (reg)))
-#endif
+
+#endif /* !defined(jit_regused_init) */
 
 /*
  * Information about a register's contents.
@@ -177,7 +186,6 @@ struct jit_elf_info
 	int			machine;
 	int			abi;
 	int			abi_version;
-
 };
 
 /*